Modul 2 Media Transmisi Jaringan.ppt

Media Transmisi Jaringan

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Pengenalan Jaringan Merupakan sebuah sistem yang terdiri atas komputer,

perangkat komputer tambahan dan perangkat jaringan lainnya yang saling terhubung dengan menggunakan media tertentu dengan aturan yang sudah ditetapkan

Kebutuhan untuk terhubung ke jaringan dan memanfaatkan layanan yang ada : Koneksi Secara Fisik (Phisical Connection), secara

langsung peralatan harus terhubung dengan jaringan tersebut.

Koneksi Secara Logis (Logical Connection), harus ada aturan yang sama supaya semua peralatan bisa saling berhubungan.

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Koneksi Secara Fisik Semua peralatan yang

berpartisipasi harus terhubung secara langsung.

Peralatan yang dibutuhkan untuk koneksi secara Fisik: PC NIC Network Media Repeater/Hub/Bridge/

Switch/Router

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Koneksi Secara Logis Merupakan sebuah aturan bersama bagaimana

informasi dikirim melalui media. Biasa disebut dengan protokol Jaringan pada dasarnya gabungan dari berbagai

macam protokol yang muaranya adalah bagaimana informasi yang dikirim oleh pengirim bisa diterima oleh penerima dengan benar.

Yang termasuk dalam protokol : Bagaimana format data yang dikirim ? Bagaimana cara data dikirim ? Bagaimana jika terjadi kesalahan selama pengiriman

dan apa yang harus dikerjakan ?

Akan dibicarakan pada kesempatan lainAkan dibicarakan pada kesempatan lain

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Komponen Jaringan PC NIC Network Media Peralatan Jaringan

Repeater Hub Bridge Switch Router

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Personal Computer Printed circuit board (PCB) CD-ROM drive Central processing unit (CPU) Floppy disk drive Hard disk drive Microprocessor Motherboard Bus Random-access memory (RAM) Read-only memory (ROM) System unit Expansion slot Power supply

Network interface card (NIC) Video card Audio card Parallel port Serial port Mouse port Power cord

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Network interface cards (NIC)

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Network Media Kabel

Tembaga Coaxial, Twisted Pair (UTP, sTP)

Fiber Optic Wireless

Bluetooth, Wi Fi, NIC Wireless, USB Wireless, etc

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Peralatan Jaringan Repeater Hub Bridge Switch Router

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Koneksi Komponen Secara Fisik

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Jenis/Tipe Koneksi Secara Fisik Bus Star Ring Extended Star Hirarchical Mesh

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Jenis Tipe Koneksi (Cont…) Koneksi Star yang

paling luas dipakai. Koneksi Star paling

banyak memakai media UTP

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Kabel UTP (Unshield Twisted Pair) Mempunyai delapan pin (4 pasang).

Pin1 dengan warna hijau-putih (TD+) Pin2 dengan warna hijau (TD-) Pin3 dengan warna orange-putih (RD+) Pin4 dengan warna biru (NC) Pin5 dengan warna biru-putih (NC) Pin6 dengan warna orange (RD-) Pin7 dengan warna coklat-putih (NC) Pin8 dengan warna coklat (NC)

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Konfigurasi Kabel UTP

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Tiga Cara Pemasangan UTP Straight Trought

Pengkabelan jenis ini biasanya diperuntukkan untuk menghubungkan peralatan yang berbeda jenis. Misal untuk menghubungkan PC dengan hub, switch dan router, switch dan PC dan sebagainya

Cross Over Pengkabelan jenis ini biaanya digunakan untuk

menghubungkan peralatan sejenis. Misal untuk menghubungkan PC dengan PC, hub dengan hub dan sebagainya

Roll Over Pengkabelan jenis ini merupakan pengkabelan

khusus, Misal untuk melakukan konfigurasi router menggunakan PC

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Straight Trought PC to Hub, PC to Switch Router to Hub, Router to Switch

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Cross Over PC to PC Hub to Hub Switch to Switch Hub to Switch

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Roll Over

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Membuat Kabel UTP

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Potong Panjang Kabel

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Gunakan Alat untuk Mengupas Kulit

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Bagian – Bagian Kabel

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Pisahkan setiap bagian dan Luruskan

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Potong Ujungnya dan Luruskan

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Masukkan ke dalam Konektor RJ45

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Tekan kabel ke dalam konektor

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Lihat warna sesuai urutan

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CAT5 Termination

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Crimping menggunakan alat yang ada

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Lihat kedua sisi harus warna harus sesuai aturan

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Test Kualitas Kabel

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Cable testing standards

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Attenuation and insertion loss on copper media

Attenuation is the decrease in signal amplitude over the length of a link.

Long cable lengths and high signal frequencies contribute to greater signal attenuation.

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Sources of noise on copper media

Crosstalk involves the transmission of signals from one wire to a nearby wire.

When voltages change on a wire, electromagnetic energy is generated. This energy radiates outward from the transmitting wire like a radio

signal from a transmitter. Adjacent wires in the cable act like antennas, receiving the transmitted

energy, which interferes with data on those wires.